package com.qf.controller;

import com.qf.pojo.User;
import com.qf.service.AdminService;
import com.qf.service.AdminServiceImpl;

import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author hanjiejie
 * @version V1.0
 * @Project java2203
 * @Package com.qf.controller
 * @Description:
 * @Date 2022/5/20 22:38
 */
@WebServlet("/admin")
public class AdminController extends BaseServlet {

    public String login(HttpServletRequest request, HttpServletResponse response){
        //1.获取参数
        String username = request.getParameter("username");
        String password = request.getParameter("password");
        //2.判断用户名和密码不为空，如果为空跳转到登录页面(redirect)
        if (username ==null || password ==null){
            return "redirect:"+ request.getContextPath()+"/admin/login.jsp";
        }
        //3调用service 校验用户 密码
        AdminService adminService  = new AdminServiceImpl();
        User user = adminService.login(username,password);

        //4.根据判断结果进行重定向操作
        if(user !=null){
        //5.将登录成功后的结果放入session会话中一直携带
            request.getSession().setAttribute("admin", user);
       //跳转到管理员首页
            return "redirect:"+request.getContextPath()+"/admin/admin.jsp";

        }else {
            //用户名，密码不正确 跳转到登录页面
            return "redirect:"+request.getContextPath()+"/admin/login.jsp";
        }
    }
}
